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Trane XL16i vs XL19i

I have decided to upgrade my old Rheem system. Both installers have quoted me on Trane systems and one of them seems to be the most complete in determining what system I need. Both have suggested upgrading from my current 3.5 ton setup to a 4 ton. I also am going to add 8 returns in the home and eliminate the return at the current air handler location. I'm also relocating the airhandler from inside the home to the garage.

The XL19i is only $800 more than the XL16i. Is there any reason not to go for the XL19i? Considering how expensive the overall systems are in the 1st place, the $800 differential between the two is not significant to me.

The 19i should do a better job at dehumidifying, and I like the idea of 2 separate compressors to provide a better difference in capacity split in low stage. Only fallback in my opinion is the R22 refrigerant of the 19i. R22 will still be available for some time, however, and if you don't plan on it leaking, then it shouldn't be a huge issue. Still something I would consider, though.

my opinion for what it's worth 16I 2 reasons main being 19Ionly available in r-22, second being 19I stages at 50&#37;/50% and 16I stages at 80%/20% wich equals more low stage operation better dehumidification and less run time at max power take it for what it's worth only an opinion and we all know what opinions are like